Senior Java Developer III

Texplorers Inc.; Lewisville (TX); On-site; USD 120,000 - 160,000; Full time

Job summary

Texplorers INC is seeking a Senior Java Developer III to lead the design and delivery of scalable, secure enterprise web applications in Lewisville, TX. The role requires deep expertise in Java, Spring, microservices, and modern development practices.

You will own the full lifecycle of complex applications, collaborate across teams, and drive improvements in performance, security, and reliability while modernizing legacy platforms.

Qualifications

• Bachelor’s degree or equivalent in CS/IT/Engineering or closely related field.
• Minimum of 2 years of experience in software design and development.
• Experience with Java and the Spring framework (Spring Boot, Spring MVC, Spring Security, Spring Data JPA).
• Migrating legacy apps to cloud platforms with scalability and security.
• SQL and data access using Oracle and JPA with custom queries.
• RESTful web services, OpenAPI contracts, and microservices architecture.
• TDD and automated tests with JUnit, Cucumber, and Karate.
• Peer code reviews and high-quality, maintainable code.

Responsibilities

• Lead design and delivery of scalable, secure enterprise web applications.
• Develop and maintain web apps using modern frameworks and microservices.
• Write and optimize SQL scripts for data access and performance.
• Design automated deployment scripts and release procedures.
• Build and maintain CI/CD pipelines and DevOps workflows for AWS/EKS.
• Write clean code and participate in peer reviews.
• Own full lifecycle of complex applications from design to deployment.
• Collaborate with teams to gather requirements and document designs.
• Translate designs into actionable development tasks and diagrams.
• Contribute to cloud migration initiatives for legacy apps.
• Migrate legacy code to latest platforms with improved maintainability and security.
• Leverage AI-assisted tools to enhance development and reviews.

Skills

Java

Spring Framework

Microservices

SQL

CI/CD

Docker

REST APIs

TDD

Code reviews

Cloud migration

Education

Bachelor’s degree in Computer Science or related field

Tools

JUnit

Cucumber

Apache Karate

Swagger/OpenAPI

JPA

Oracle SQL

Amazon EKS

Docker

Job description

We are seeking a Senior Java Developer III to lead the design and delivery of scalable, secure, high-performing enterprise web applications. The ideal candidate brings deep expertise in Java, modern frameworks, and microservices, with a passion for building reliable systems, modernizing legacy platforms

Location: Lewisville, TX

Position Type: Full-Time

Hours: 9:00 am to 5:00 pm Weekdays (Monday - Friday)

Key Responsibilities

Job Duties

Under general supervision, the beneficiary will perform the following software development duties (Totaling 100% of the standard work week):

• [15%] Participate in the design, development, and implementation of robust web applications using enterprise backend technologies, translating business requirements into scalable, secure, high-performing solutions.
• [15%] Develop and maintain web-based applications using modern frameworks and micro services architecture, ensuring scalability, modularity, and seamless integration across distributed systems.
• [12%] Author and optimize complex SQL scripts and data access logic for new and existing applications, performing tuning and performance analysis to ensure efficient, low-latency data operations.
• [4%] Design automated deployment scripts and release procedures for consistent, reliable releases across development, testing, staging, and production environments.
• [4%] Build and maintain CI/CD pipelines and DevOps automation workflows, integrating build, test, and deployment stages to improve delivery speed and quality.
• [3%] Write clean, high-quality code per established standards and participate in peer code reviews to catch defects early and uphold team code quality.
• [18%] Own the full lifecycle for complex applications - design, coding, testing, debugging, and documentation - ensuring production systems are reliable and meet user needs.
• [5%] Collaborate with developers, project managers, and analysts to gather requirements, prepare application designs, and produce clear technical documentation.
• [5%] Translate technical design documents into actionable tasks and create flow diagrams to guide and support application developers.
• [8%] Contribute to cloud migration initiatives for legacy applications, planning and executing moves to improve scalability, resilience, and efficiency.
• [8%] Analyze legacy codebases and migrate them to latest supported platforms, minimizing risk while improving maintainability, security, and performance.
• [3%] Leverage AI-assisted tools to support development, code reviews, and design reviews, improving code quality, accelerating delivery, and ensuring designs meet requirements and standards.

Technical Experience

Position requires all of the following:

• Bachelor’s degree or equivalent in Computer Science or Information Technology or Electronics Engineering or closely related field.
• Minimum of 2 years of experience in a specialty occupation role performing software design and development.
• Demonstrated experience must include at least 2 years of utilizing the following core methodologies and tools:
• Designing, developing, and implementing customer-facing web applications and services using Java and the Spring framework, including Spring Boot, Spring MVC, Spring Security, and Spring Data JPA, Work is performed in Agile development environments, participating in sprint planning, daily stand-ups, sprint reviews, and retrospectives, and delivering software in iterative increments.
• Migrating legacy applications to cloud platforms, including assessing on-premises workloads, re-platforming applications for cloud deployment, and ensuring scalability, security, and performance in the cloud environment.
• Designing and optimizing database queries for Oracle databases using advanced indexing, query optimization, and transaction management; programming with SQL and relational databases using the Java Persistence API (JPA) and writing custom SQL queries.
• Performing Object-Oriented Design (OOD); designing and developing RESTful web services; designing and implementing OpenAPI (Swagger) contracts using domain-driven design strategies for migrating legacy applications to microservices.
• Implementing Test-Driven Development (TDD) and automated unit, integration, and API testing using JUnit, Cucumber, and Apache Karate.
• Conducting peer code reviews to ensure high-quality, maintainable code following coding standards and best practices, with emphasis on readability, reusability, and performance, and knowledge sharing across the development team.
• Building CI/CD pipelines for deployment to Amazon EKS using Docker images.